Deep below the ocean lives the squid Chiroteuthis, known in Japan by the name Yurei Ika (Phantom Squid). The Japanese name comes from its ghost-like fluttering and floating movement.

It’s a squid seldom seen by people who don’t have access to a submarine and can visit their habitat 200 to 600 meters beneath the ocean. So when they started turning up in unprecedented numbers around the southeastern coast of Japan, experts became understandably alarmed.